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20 sharpening tools

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20 sharpening tools

  1. 1. WOOD MATERIALS TECHNOLOGY 4th Edition
  2. 2. Chapter 20 Sharpening Tools
  3. 3. Sharpening − chisels/planes Procedure Grinding Sharpening/honing Backing off (remove the burr)  Grinding  Sharpening
  4. 4. When to grind? You grind the blade when  It has worn down  It has been damaged  It has been rounded over by incorrect sharpening
  5. 5. Sharpening process − Sharpening stones
  6. 6. Sharpening angles  Grinding angle – 25 degrees  Sharpening angle – 30 degrees
  7. 7. Sharpening − saws Process  Hold saw in the vice and file the teeth level  The teeth are reshaped to a fine point using a triangular file  Every second tooth must be bent (set) to the side using a saw set
  8. 8. Quiz
  9. 9.  Name the piece of sharpening equipment in the pictures below − Slipstone − Oilstone/honing stone
  10. 10.  What are the correct angles associated with sharpening the blade of a plane? Grinding angle 25° Sharpening angle 30° 25° 30°
  11. 11.  Name this tool and describe why it is important  Sawset – The sawset bends every second tooth of a saw to one side – This ensures that when the saw cuts a piece, the blade does not get stuck in the groove or kerf
  12. 12.  What is used to lubricate this sharpening stone?  Oil is used to keep the stone lubricated and to stop the stone getting clogged

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